Ditstpboof valve stbuctttbe fob pneumatic wheels



Feb. 26, 1929. 1,703,263

- D. M. CUTSHAW DUSTPROOF VALVE STRUCTURE FOR PNEUMATIC WHEELS FiledJuly 16, 1928 Inventor J). m." 62 zip/74 Amrngy PATENT OFFICE.

DANIEL MONROE CUTSHAW. OF GREENEVILLE, TENNESSEE.

DUSTPROOF VALVE STRUCTURE FOR PNEUMATIC WHEELS.

Application filed July 16,

lhe present invention pertains to improvements in the art oi? pneumaticwheels and has a more particular reference to a dust proof valvestructure for pneui'natic wheels.

The invention aims to provide a novel structure wherein couiplcmentarymeans between the usual wheel rim and the threaded valve body will serveeliiciently to ;)revent the entrance ol" foreign matter between the rimand the inner tube oi. the wheel striurture.

The scraping and quick 'detm'ioration of inner tubes is frequently theresult of tine particles of sand and even water which have found theirway into the wheel usually around the valve body.

The prime object of the invention is to provide dust proofing means forpneumatic wheels Without departing materially from the present Wheelstructure now in general use.

Another important object of the invention is to provide water and sandproofing means for pneumatic wheels which can be applied to conventionalwheels after but a slight modification thereof.

Still another object is to provide such means as aforementioned of suchsimple con struction to require no additional costto the purchasingpublic. 7

After reading the following specification and claims, other ii'ziportantobjects and advantages oi? the invention will hecon'ie apparent.

in the drawings:

The single u o represents Fragmentarily and in lo" lal section apneuniatic inner tube efiilill ijwtl vith a conventional valve body,while the structure forming the present invention is shown in loo;tudii'ial sectional view and in secured roluti to tile rim.

llei': ring; to the drawings, wherein like nun'ierals do, i nnate lilacparts, a con ventional inner tube is l ragrinentarily showi'i and des-IlQl'littetl in the drawings, by A. A conveutionul rim l3 is "tor-medwith the usual valve opening C. A. valve body I) of the usual exteriorthreaded construction issecured to the inner tube A, in the usual mannerdesignated. by E. The threaded portion of the valve body is adapted toproject through the valve opening C in the usual manner.

The structure embodying the present invention includes an externallythreaded collar 1, outstanding at the inner side of the 1928. Serial No.292 990.

rim B, and disposed around the valve opening C. The threaded valve bodyI) is adapted to project through said collar in spaced relationtherewith.

A sleeve is formed with an enlarged threaded opening whereby the sleevemay be engaged over the threaded. collar 1 in the manner soown in thedrawing.

The sleeve 2 is also provided with an e."- tei" ally threaded red icedextension 8, which is also formed with an internally redued threadedbore for threaded en agcinent with the external threads of the valvebody D.

A dust cap 4 is reduced at its open end and internally threaded forengagement with the external threads of the reduced portions 3 of thesleeve. k

In assembling, the present novel valve structure the valve bodyl) isinserted through the valve opening in the rim, in the usual manner. Thesleeve 2 is then threaded inwardly on the valve body and subsequentlythreaded onto the externally threaded collar 1. in this position, nospace exists between the val o body anu the edge portion of the opening0, through which foreign matter may enter. The valve cap a then bethreaded onto the reduced. portion of the sleeve 2 in the manner shownin the drawings.

It is to be understood that certain changes in the specific shape, sizeand n'iaterials rnav he resorted to, in t io manufacture of thisi1ivolition, without departing}; from the spirit of the invention or thescope oi the appended claims.

Having thus dr 'bed my invention, what is claimed as new is:

1. In a dust proof valve structure for pneun'iatie wheels wherein therim is formed with a threaded hollow protuberance around the usual valveo 'iening, a sleeve reduced at one end, said reduced end beinginternally and externally threaded, the opposite end oi said sleevebeingenlarged and formed with an enlarged threaded opening anapted forieu gaezneat over the protuberance on the r m, the usual valve bodybeing adapted to e gage through the reduced portion of the sleeve whileexternal threads of said reduced portion'are adapted to receive asuitable dust cap.

2. In dust proof valve structure for pneumatic wheels, in combination, awheel rim having a valve opening formed therein, an outstanding threadedcollar provided at the inner side of said rim andaround said opening, aninternally threaded sleeve for attachment to said collar, one end ofsaid sleeve being reduced and formed with a reduced threaded bore, athreaded valve body having communication with the ueual pneumatic tubeand being adapted for threz ded engagement through the reduced boreo't'the sleeve.

3. In a dust proof valve structure for pneumatic Wheels, in combination,a Wheel rim having a valve opening formed therein, an outstandingthreaded collar provided at

